General
Target

308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230

Size

120KB

Sample

220621-dw63xscdg8

Score
10/10
MD5

b84615094beeac27936f9d8838bba53c

SHA1

03c41583b675686e05c855c2e891387c88df1933

SHA256

308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230

SHA512

06e49d5b95e5c601b8813fe21ae3bb0563e5231171b6655eb34a97403fb51d9e0e171d66907958c112cd6b43a61f57e101b6c3a691e8b843a1566c6fd61a621e

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets
Target

308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230

MD5

b84615094beeac27936f9d8838bba53c

Filesize

120KB

Score
10/10
SHA1

03c41583b675686e05c855c2e891387c88df1933

SHA256

308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230

SHA512

06e49d5b95e5c601b8813fe21ae3bb0563e5231171b6655eb34a97403fb51d9e0e171d66907958c112cd6b43a61f57e101b6c3a691e8b843a1566c6fd61a621e

Tags

Signatures

  • Tofsee

    Description

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    Tags

  • Windows security bypass

    Tags

    TTPs

    Disabling Security ToolsModify Registry
  • Creates new service(s)

    Tags

    TTPs

    New Service
  • Executes dropped EXE

  • Modifies Windows Firewall

    Tags

    TTPs

    Modify Existing Service
  • Sets service image path in registry

    Tags

    TTPs

    Registry Run Keys / Startup FolderModify Registry
  • Checks computer location settings

    Description

    Looks up country code configured in the registry, likely geofence.

    TTPs

    Query RegistrySystem Information Discovery
  • Deletes itself

  • Suspicious use of SetThreadContext

Related Tasks

MITRE ATT&CK Matrix
Collection
    Command and Control
      Credential Access
        Execution
          Exfiltration
            Impact
              Initial Access
                Lateral Movement
                  Privilege Escalation
                    Tasks

                    static1

                    Score
                    N/A

                    behavioral1

                    Score
                    10/10

                    behavioral2

                    Score
                    10/10